JP5343826B2 - Coil parts - Google Patents

Description

  The present invention relates to a coil component, and more particularly to a structure of a collar portion to which a conducting wire is connected.

  2. Description of the Related Art Conventionally, in a coil component, for example, a common mode filter, a structure in which a terminal electrode is disposed on a collar portion and a conducting wire is connected to the terminal electrode by crimping or the like is known. Further, Patent Document 1 discloses a structure in which a groove is formed in a collar portion and a conducting wire is connected in the groove.

JP 2005-197470 A

  When a terminal electrode is provided on the surface of the collar part and the conductor is connected, the upper part of the coil component is increased by the diameter of the conductor arranged on the surface of the collar part. When the surface to which the conducting wire is connected is used as the mounting surface, the conducting wire arranged on the surface of the collar portion becomes an obstacle and the stability during mounting is lowered. In addition, when connected by crimping, the difference in distortion between the part of the conducting wire (the part that was crushed by crimping) and the part that is not connected (the part that has not been crimped) increases, There is a possibility that a connection failure such as the disconnection of the conductive wire at the boundary between the connected portion and the unconnected portion may occur.

  By adopting a configuration in which the conducting wire is arranged in the groove as in Patent Document 1, the above-mentioned problem is solved. However, when connecting by crimping, sufficient pressure is applied to the conducting wire due to the depth of the groove. In some cases, reliable connection was not performed.

  Accordingly, an object of the present invention is to provide a coil component that performs reliable connection and reduces mounting defects.

In order to achieve the above object, the present invention provides a core part, a drum core having a flange part connected to an axial end of the core part, and one end and the other end wound around the core part. A conductive wire extending to the flange portion, and a first electrode portion and a second electrode portion provided on the flange portion and connected to the one end and the other end of the conductive wire, respectively, The part is provided with a connecting surface to which the end of the core part is connected, a first flat surface on which the first electrode part is connected and intersected with the connecting surface, and a second electrode part. A first groove portion formed so as to open to the connection surface and the first flat surface through a crossing position of the connection surface and the first flat surface; A second groove formed so as to pass through the intersection of the surface and the second flat surface and open to the connection surface and the second flat surface, and the first groove is at least The first flat surface is formed so as to taper away from the crossing position of the connection surface and the first flat surface, and the second groove portion is at least the second flat surface and the connection surface and the second flat surface. The conductor is formed so as to taper away from the intersection with the flat surface, and one end of the conducting wire extends from the core portion and is disposed in the first groove portion. The first groove portion is connected to the first electrode portion at a position near the tip of the first groove portion, and the other end of the conducting wire extends from the winding core portion and is disposed in the second groove portion. And the flange is connected to one end side and the other end side in the axial direction of the winding core portion, respectively, and the first flat surface, respectively. And the first electrode comprising the first and second collars defining the second flat surface And the second electrode portions are respectively disposed on the first collar portion and the second collar portion, and the connection surfaces are first connection surfaces respectively disposed on the first collar portion and the second collar portion. And one end of the core portion is connected to the first connection surface, the other end of the core portion is connected to the second connection surface, and the first groove portion is The first connection surface is formed over the first flat surface, and the first connection surface is formed so as to taper away from the intersecting position of the first connection surface and the first flat surface. The second groove is formed across the second connection surface and the second flat surface, and is separated from the intersection of the second connection surface and the second flat surface at the second connection surface. And the leading end of the first connecting surface side of the first groove portion extends from the center of the width of the first groove portion to the inside of the first groove portion. The tip on the second connecting surface side of the second groove portion is biased in the direction of being routed to the winding core portion, and the lead wire extends from the inside of the second groove portion from the width center of the second groove portion. Provided is a coil component that is biased in the direction of being drawn around a core .

According to such a configuration, since the conducting wire can be arranged in the first and second groove portions along the tip portions of the first and second flat surfaces of the first and second groove portions, The connecting position on the flat surface (position near the tip of the first and second grooves) can be accurately defined. Since the connecting line itself is performed on the first and second flat surfaces, the connecting line can be reliably connected and the fixing strength can be increased, and the connecting defect can be suppressed. On the first and second flat surfaces, the conductors other than the connecting points are arranged in the first and second groove portions, and thus the unconnected conductors excessively protrude from the first and second flat surfaces. It is suppressed. Moreover, since the conducting wire which is not connected on the first and second flat surfaces is arranged in the first and second groove portions, even if the connecting portion of the conducting wire is crushed by pressure bonding, the degree of the crushed is reduced. Thus, disconnection can be suppressed. In addition, the direction in which the conducting wire is routed from the winding core portion to the first groove portion and the direction in which the contour portion where the conducting wire of the opening on the connection surface of the first groove portion extends extends at an angle close to 90 °. can do. Therefore, it is possible to stably hook the conducting wire to the first groove portion and to connect more reliably. The same applies to the second groove.

  In the coil component having the above configuration, the first flat surface and the second flat surface are preferably mounted surfaces that are arranged on the same plane and mounted on the substrate.

  According to such a configuration, since the conducting wire does not protrude excessively from the first and second flat surfaces, the coil component can be stably mounted on the substrate even if the first and second flat surfaces are used as mounting surfaces.

  The first electrode portion is formed by plating and is also disposed at the end portion on the first flat surface side on the inner surface of the first groove portion, and the second electrode portion is formed by plating and is formed on the inner surface of the second groove portion. It is preferable that the second flat surface side is also disposed at the end position.

  According to such a configuration, even in the first and second groove portions, the plated portion can be melted and the conductive wire can be connected to the first and second electrode portions, and a stronger connection structure can be adopted. it can.

  According to the coil component of the present invention, reliable wiring can be performed and mounting defects can be reduced.

The top view of the coil components which concern on embodiment of this invention. The top view which concerns on the drum core of the coil components which concern on embodiment of this invention. Sectional drawing along the III-III line of FIG. Sectional drawing along the IV-IV line of FIG. The side view of the coil components which concern on embodiment of this invention.

  Hereinafter, a coil component according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. A coil component 1 shown in FIG. 1 is a common mode filter used for high-speed differential signal transmission, and includes a drum core 2, a first electrode 6, a second electrode 7, a first conductor 8, and a second conductor 9. Mainly, the first conductor 8 and the second conductor 9 are bifilar wound to form a coil.

  The drum core 2 is manufactured by firing a magnetic powder such as ferrite after being molded by a mold. As shown in FIG. 2, the core portion 3, one end side in the axial direction of the core portion 3, and the like. The first collar part 4 and the second collar part 5 respectively connected to the end side are mainly provided, and as shown in FIG. 3, the profile of the side surface is the core part 3, the first collar part 4 and the second collar part. It is comprised so that substantially H shape may be comprised with the collar part 5. As shown in FIG.

  The core portion 3 has a surface 3A and is configured so that a cross section perpendicular to the axial direction is substantially rectangular as shown in FIG. The surface 3A is composed of a first surface, a second surface, a third surface, an upper surface 31, a first side surface 32, a lower surface 33, and a second side surface 34 corresponding to the four sides of the substantially rectangular shape, The upper surface 31 and the lower surface 33 are opposed to each other to form a substantially rectangular long side, and the first side surface 32 and the second side surface 34 are opposed to each other to form a substantially rectangular short side. In addition, corners corresponding to the corners of the four corners of a substantially rectangular shape are formed at portions where each surface is connected to the other surface.

  Further, the core portion 3 is formed with a plurality of recesses that are recessed from the surface 3A toward the axis of the core portion 3, and the recesses are corners that are connected to the upper surface 31 at the first side surface 32 as shown in FIG. A plurality of groove-shaped first regulating recesses 32a formed in a series from the corners to the corners connected to the lower surface 33 (FIG. 3) and the corners to the lower surface 33 connected to the upper surface 31 at the second side surface 34. And a plurality of groove-like second restricting recesses 34a formed in a series over the corners connected to each other.

  The first regulating recess 32a includes a bottom surface 32A that forms a bottom of the recess shape, one end-side inclined surface 32B connected to one end side in the axial direction of the bottom surface 32A and the surface 3A, the other end side in the axial direction of the bottom surface 32A, and the surface 3A. The other end side inclined surface 32C connected to the. The angles with respect to the surface 3A of the one end side inclined surface 32B and the other end side inclined surface 32C are configured to be equal to each other. The second restricting recess 34a is also defined by a bottom surface 34A, one end-side inclined surface 34B, and the other end-side inclined surface 34C that have the same configuration as the first restricting recess 32a. The angles with respect to the surface 3 </ b> A with the side slope 34 </ b> C are configured to be equal.

  The plurality of first restriction recesses 32a are arranged in a line at equal intervals from the first flange 4 side which is one end side of the core portion 3 toward the second flange 5 side which is the other end side. ing. The plurality of second restricting recesses 34a are arranged as shown in the plan view of FIG. 2 and are arranged at positions rotated by 180 ° in parallel with the plane, from the first flange 4 side to the other end side. Three pieces are arranged at equal intervals toward the second flange portion 5 side.

  The plurality of first restricting recesses 32a and the plurality of second restricting recesses 34a are a first restricting recess 32a, a second restricting recess 34a, and a first restricting recess in the direction from the first collar 4 to the second collar 5. 32a... Are arranged alternately so that the interval between adjacent first restricting recesses 32a and the interval between adjacent second restricting recesses 34a are the same. Further, the distance from the first flange 4 to the first restriction recess 32a closest to the first flange 4 and the distance from the second flange 5 to the second restriction recess 34a closest to the second flange 5 Are configured to be equal. Therefore, the core part 3 is configured in a symmetrical shape that takes the same shape even if it is rotated by 180 ° parallel to the plane in the state of being arranged as shown in the plan view of FIG.

  Since the 1st collar part 4 and the 2nd collar part 5 each take the same shape, the 1st collar part 4 is demonstrated as a representative. The first collar portion 4 is formed into a substantially cubic shape, and is connected to the first upper surface 4A, which is a first flat surface formed in parallel with the upper surface 31 of the core portion 3, and the first upper surface 4A. 4A and a first connection surface 4B that intersects the axis of the core portion 3 and is connected to the core portion 3, a first lower surface 4C that is formed in parallel with the lower surface 33 of the core portion 3, and the coil component 2 It has 1st end surface 4D used as a longitudinal direction (axial direction of the core part 3) end surface. Further, the first flange portion 4 has two first groove portions 41a and 42a that pass through the intersecting position of the first connection surface 4B and the first upper surface 4A and open to the first connection surface 4B and the first upper surface 4A. Are aligned in a direction perpendicular to the axial direction of the core portion 3. Since the two first groove portions 41a and 42a have the same shape, the first groove portion 41a will be mainly described.

  The first groove portion 41a is perforated so that a cross section perpendicular to the extending direction is substantially V-shaped, and the contours of the opening portions of the first upper surface 4A and the first connection surface 4B are the same as those of the first connection surface 4B. As the distance from the intersection with the first upper surface 4A increases, the taper tapers and becomes shallower. Therefore, as shown in FIGS. 2 and 4, the outline of the opening portion of the first groove 41 a in the first upper surface 4 </ b> A and the first connection surface 4 </ b> B has a substantially V-shape that tapers toward the tip. Further, the tip of the first groove portion 41a on the first upper surface 4A side is arranged at a position that coincides with the center of the width of the first groove portion 41a at the maximum width position. As shown in FIG. 4, the first conductor 8 is routed from the first groove 41a to the core 3 from the center of the width of the first groove 41a (in a direction substantially orthogonal to the axial direction of the core 3). Thus, the first side surface 32 is biased toward the second side surface 34). Therefore, the second side surface 34 is formed in the direction in which the first conductor 8 is routed from the first groove portion 41a to the core portion 3 and in the substantially V-shaped contour portion of the opening in the first connection surface 4B of the first groove portion 41a. It can be configured such that the direction in which the side portion close to is intersected at an angle close to 90 °. A side portion close to the second side surface 34 in the substantially V-shaped contour portion of the opening in the first connection surface 4B is defined as a first latching portion 41A on which a first conductor 8 described later is latched.

  Similarly, for the first groove portion 42a, the tip of the contour on the first upper surface 4A side is arranged at a position that becomes the width center of the first groove portion 42a, and the tip of the contour on the first connection surface 4B side is the first groove portion 42a. The second conductive wire 9 is offset from the center of the width in the direction in which the second conductive wire 9 is routed from the first groove portion 42a to the core portion 3, and has an approximately V-shaped opening in the first connection surface 4B of the first groove portion 42a. 42A of 1st latching | locking parts are prescribed | regulated by the side part close | similar to the 2nd side surface 34 in this outline part.

  Similarly to the first collar part 4, the second collar part 5 has a second upper surface 5A, a second connection surface 5B, a second lower surface 5C, and a second end surface 5D, which are second flat surfaces. 2nd groove part 51a, 52a is provided, and in the 2nd groove part 51a, 52a, the front end by the side of the 2nd connection surface 5B is the 1st conducting wire 8 and the 2nd conducting wire 9 to the core part 3 from the inside of 2nd groove part 51a, 52a, respectively. In the direction of being drawn around (the direction substantially orthogonal to the axial direction of the core portion 3 and the direction from the second side surface 34 toward the first side surface 32). 2nd latching | locking part 51A, 52A is prescribed | regulated to the outline part of opening. Since the first collar part 4 and the second collar part 5 have the same shape, the drum core 2 has the same shape even if it is rotated 180 ° parallel to the plane in the state of being arranged as shown in the plan view of FIG. A symmetrical shape is adopted. Moreover, as for the 1st collar part 4 and the 2nd collar part 5, the 1st upper surface 4A and the 2nd upper surface 5A are arrange | positioned on the same plane, and the 1st lower surface 4C and the 2nd lower surface 5C are arrange | positioned on the same plane. It is configured like this.

  Since the first electrode 6 and the second electrode 7 have the same shape, the first electrode 6 will be described as a representative. As shown in FIG. 5, the first electrode 6 includes a pair of electrodes 6A and 6B that are provided in series on the first flange portion 4 across the first upper surface 4A and the first lower surface 4C. The pair of electrodes 6A and 6B are formed by applying a silver paste and baking it, followed by plating with copper, nickel and tin. Further, as shown in FIG. 1, a part of the electrode 6A is also formed in the first groove 41a including the vicinity of the tip on the first upper surface 4A, and a part of the electrode 6B is located near the tip on the first upper surface 4A. It is formed also in the 1st groove part 42a containing. In the first electrode 6, in the first upper surface 4 </ b> A portion, the positions near the first groove portions 41 a and 42 a serve as connection points with the first conducting wire 8 and the second conducting wire 9, respectively. Moreover, since the plating part of the 1st electrode 6 exists in the 1st groove parts 41a and 42a and the plating part of the 1st electrode 6 exists in the 1st groove parts 41a and 42a tip position of the 1st upper surface 4A, The plating in the first groove portions 41a and 42a is melted to connect the first conductor 8 and the second conductor 9, and the plated portion on the first upper surface 4A is melted and flows into the first grooves 41a and 42a. The connection of the first conductor 8 and the second conductor 9 in the grooves 41a and 42a can be reinforced. Similarly to the first electrode 6, the second electrode 7 is also composed of a pair of electrodes 7A and 7B. The first conductor 8 and the second conductor 9 are connected on the second upper surface 5A, and the second grooves 51a and 52a. Inside, the 1st conducting wire 8 and the 2nd conducting wire 9 are connected.

  The first conducting wire 8 and the second conducting wire 9 are each a coated conducting wire in which an insulating coating is applied to the core wire, and is wound around the core portion 3 to form a coil. The diameters of the core wires of the first conducting wire 8 and the second conducting wire 9 and the thickness of the insulating coating are configured to be substantially equal. As shown in FIG. 1, one end and the other end of the first conducting wire 8 are hung on the first hooking portion 41A and the second hooking portion 51A of the first connection surface 4B and the second connection surface 5B, respectively. The first groove portion 41a and the second groove portion 51a are disposed on the first upper surface 4A and the second upper surface 5A from the tip positions on the first upper surface 4A side and the second upper surface 5A side of the first groove portion 41a and the second groove portion 51a. Are connected to and electrically connected to the electrodes 6A and 7A on the first upper surface 4A and the second upper surface 5A, respectively. Similarly to the first conductor 8, the second conductor 9 also has one end and the other end respectively hooked on the first hook 42A and the second hook 52A of the first connecting surface 4B and the second connecting surface 5B. The first groove portion 42a and the second groove portion 52a are disposed on the first upper surface 4A and the second upper surface 5A from the tip positions on the first upper surface 4A side and the second upper surface 5A side of the first groove portion 42a and the second groove portion 52a. Guided and electrically connected to the electrodes 6B and 7B on the first upper surface 4A and the second upper surface 5A, respectively. The first hooking portions 41A and 42A and the second hooking portions 51A and 52A are in the direction in which the first conductor 8 and the second conductor 9 extend from the first groove 41a and the like toward the core portion 3 as described above. And the first conducting wire 8 and the second conducting wire 9 are hung on the first hooking portions 41A and 42A and the second hooking portions 51A and 52A, respectively. By wiring in the groove portions 41a and 42a and the second groove portions 51a and 52a, the first conductor 8 and the second conductor 9 can be stably latched on the first groove 41a and the like.

  As a winding configuration of the first conducting wire 8 and the second conducting wire 9 around the winding core portion 3, as shown in FIG. 1, the respective ends are connected to the electrodes 6 </ b> A and 6 </ b> B of the first electrode 6. In this state, the first conductor 8 is pulled out in parallel from the first grooves 41a and 42a so that the first conductor 8 is always located on the second flange 5 side from the second conductor 9, and the winding core 3 and the second core 9 In the connection portion with the first flange portion 4, the second side surface 34 is routed. Thereafter, as shown in FIG. 5, the first restriction recess 32 a that extends along the lower surface 33 and extends toward the first side surface 32 and is closest to the first flange portion 4 as shown in FIGS. 1 and 5. It is arrange | positioned in and it is drawn around to the upper surface 31 side. Thereafter, it extends from the upper surface 31 toward the second side surface 34 and is disposed in the second restriction recess 34a closest to the first flange 4 as shown in FIG. This configuration is repeated, and the first conductor 8 and the second conductor 9 are arranged in the second restriction recess 34 a closest to the second flange 5 and then become a connecting portion between the core portion 3 and the second flange 5. From the first side surface 32, the second groove portion 51a is disposed in the second groove portion 51a, drawn to the second electrode 7 located on the second upper surface 5A of the second flange portion 5, and connected to the electrode 7A and the electrode 7B, respectively.

  Since the 1st conducting wire 8 and the 2nd conducting wire 9 are arrange | positioned so that the 1st conducting wire 8 may be located in bottom face 32A, 34A in the 1st control recessed part 32a and the 2nd control recessed part 34a, the 2nd conducting wire 9 is It arrange | positions on the one end side inclined surfaces 32B and 34B located in the 1st collar part 4 side rather than bottom 32A, 34A. The one-end-side inclined surfaces 32B and 34B fall from the surface 3A to the bottom surfaces 32A and 34A in the direction from the first flange 4 to the second flange 5 in the direction in which the first conductor 8 and the second conductor 9 are wound. It is configured as follows. Therefore, by arranging the second conductor 9 on the one end side slopes 32B and 34B and winding it while tightening, the second conductor 9 moves to the second flange 5 side and falls to the bottom surfaces 32A and 34A, and the bottom surface 32A. , 34 </ b> A is in contact with the first conductor 8.

  According to the coil component 1 having the above configuration, the first groove portions 41a and 42a and the second groove portion 51a are arranged along the tip portions of the first groove portions 41a and 42a and the second groove portions 51a and 52a on the first upper surface 4A and the second upper surface 5A. , 52a, the first conductor 8 and the second conductor 9 can be arranged, so that the connecting positions on the first upper surface 4A and the second upper surface 5A (the tips of the first groove portions 41a and 42a and the second groove portions 51a and 52a). (Neighboring position) can be accurately defined. Since the connection itself of the first conductor 8 and the second conductor 9 is performed on the first upper surface 4A and the second upper surface 5A, it can be reliably connected and the fixing strength can be increased, thereby suppressing the connection failure. it can. On the first upper surface 4A and the second upper surface 5A, the first conducting wire 8 and the second conducting wire 9 other than the connecting portion are arranged in the first groove portions 41a and 42a and the second groove portions 51a and 52a, respectively. As shown in FIG. 5, the first conductor 8 and the second conductor 9 that are not connected are prevented from excessively protruding from the first upper surface 4A and the second upper surface 5A. On the first upper surface 4A and the second upper surface 5A, the connecting points are crushed and thinned by pressure bonding, so the connecting points of the first conductor 8 and the second conductor 9 on the first upper surface 4A and the second upper surface 5A. , And the coplanarity of the unconnected part is very good.

  In addition, since the first conductor 8 and the second conductor 9 that are not connected on the first upper surface 4A and the second upper surface 5A are disposed in the first groove portions 41a and 42a and the second groove portions 51a and 52a, Even if the connecting portion of the first conducting wire 8 and the second conducting wire 9 is crushed by pressure bonding, the degree of the crushed can be reduced. Therefore, the deformation / distortion of the connecting portion relative to the portion that is not connected can be reduced to suppress a sudden change in thickness, and thus disconnection can be suppressed.

  The connecting points in the first conducting wire 8 and the second conducting wire 9 are positions near the tips of the first groove portions 41a and 42a and the second groove portions 51a and 52a, and in the first groove portions 41a and 42a and in the second groove portions 51a and 52a. As described above, a part of the first electrode 6 and a part of the second electrode 7 are present in the tip part of the first groove part 41a, 42a and the second groove parts 51a, 52a. The first conducting wire 8 and the second conducting wire 9 are connected to the first electrode 6 and the second electrode 7, and a stronger connecting structure can be taken.

  Further, the first upper surface 4A and the second upper surface 5A are arranged on the same plane, and the first conductor 8 and the second conductor 9 are prevented from excessively protruding from the first upper surface 4A and the second upper surface 5A. Therefore, even when the first upper surface 4A and the second upper surface 5A are used as mounting surfaces on which the coil component 1 is mounted on the substrate, the first upper surface 4A and the second upper surface 5A can be preferably mounted.

  In the present embodiment, the configuration in which the flange portions are provided at both ends of the core portion has been described. However, the present invention is not limited thereto, and the flange portion is provided only at one end of the core portion, and the first flat surface is provided on the flange portion. And you may take the structure which prescribes | regulates a 2nd flat surface. Further, the number of conductive wires is not limited to a plurality, and even in the case of a single wire, it can be configured in the same manner as in this embodiment.

1 .. Coil parts 2.. Drum core 3.. Core part 3 A.. Surface 4. 1st collar 4 A. 1st upper surface 4 B.. 1st connection surface 4 C ... 1st lower surface 5. 5A ··· Second upper surface 5B · · Second connection surface 5C · · Second lower surface 6 · · First electrode 6A · · electrode 6B · · electrode 7 · · second electrode 7A · · electrode 7B · · electrode 8 .. First conductor 9 .. Second conductor 31 .. Upper surface 32 .. First side surface 32A .. Bottom surface 32B .. One end side slope 32C .. Other end side slope 32a ... First regulation recess 32a・ First regulating recess 33 ..Lower surface 34 ..Second side surface 34A ..Bottom surface 34B ..One end side slope 34C ..Other end side slope 34a ..Second regulation recess 41A, 42A ..First latching portion 41a 42a ··· First groove 51A, 52A · · Second hook 51a, 52a · · · Second groove

Claims (3)

A drum core, and a drum core having a flange connected to an axial end of the core;
A conducting wire wound around the winding core portion and having one end and the other end extending to the flange portion;
A first electrode portion and a second electrode portion provided on the flange and connected to the one end and the other end of the conducting wire, respectively,
The flange portion is provided with a connection surface to which an end of the core portion is connected, a first flat surface on which the first electrode portion is connected and intersected with the connection surface, and the second electrode portion. A first groove portion formed so as to pass through a position where the connection surface and the first flat surface intersect and to open to the connection surface and the first flat surface; Having a second groove formed so as to pass through the intersection between the connection surface and the second flat surface and open to the connection surface and the second flat surface;
The first groove portion is formed so as to taper as it gets away from the intersection position of the connection surface and the first flat surface at least on the first flat surface,
The second groove portion is formed so as to taper as it gets away from the intersection position of the connection surface and the second flat surface at least on the second flat surface,
One end of the conducting wire extends from the core portion and is disposed in the first groove portion, and is connected to the first electrode portion at a position near the tip of the first groove portion on the first flat surface. ,
The other end of the conducting wire extends from the core and is disposed in the second groove, and is connected to the second electrode at a position near the tip of the second groove on the second flat surface. It is,
The flange portion is connected to one end side and the other end side in the axial direction of the core portion, and from the first flange portion and the second flange portion where the first flat surface and the second flat surface are respectively defined. Configured,
The first electrode part and the second electrode part are disposed on the first collar part and the second collar part, respectively.
The connection surface has a first connection surface and a second connection surface respectively disposed on the first flange portion and the second flange portion, and one end of the core portion is connected to the first connection surface. The other end of the core is connected to the second connection surface,
The first groove portion is formed across the first connection surface and the first flat surface, and as the first connection surface is separated from the intersection position of the first connection surface and the first flat surface, Formed to taper,
The second groove portion is formed across the second connection surface and the second flat surface, and as the second connection surface is separated from the intersection position of the second connection surface and the second flat surface. Formed to taper,
In the first groove portion, the tip on the first connecting surface side is biased from the center of the width of the first groove portion in a direction in which the conductive wire is routed from the inside of the first groove portion to the core portion,
In the second groove portion, the tip on the second connection surface side is offset from the center of the width of the second groove portion in a direction in which the conductive wire is routed from the inside of the second groove portion to the core portion. Coil parts characterized by that. 2. The coil component according to claim 1, wherein the first flat surface and the second flat surface are a mounting surface arranged on the same plane and mounted on a substrate. The first electrode portion is formed by plating and is also disposed at an end portion position on the first flat surface side on the inner surface of the first groove portion,
3. The coil according to claim 1, wherein the second electrode portion is formed by plating and is also disposed at an end position on the second flat surface side on the inner surface of the second groove portion. parts.

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